ZHCSCK8G May   2014  – October 2017 LP8860-Q1

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     系统效率
  4. 4 修订历史记录
  5. 5 器件比较表
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Electrical Characteristics
    6. 7.6  Current Sinks Electrical Characteristics
    7. 7.7  Boost Converter Characteristics
    8. 7.8  Logic Interface Characteristics
    9. 7.9  VIN Undervoltage Protection (VIN_UVLO)
    10. 7.10 VDD Undervoltage Protection (VDD_UVLO)
    11. 7.11 VIN Overvoltage Protection (VIN_OVP)
    12. 7.12 VIN Overcurrent Protection (VIN_OCP)
    13. 7.13 Power-Line FET Control Electrical Characteristics
    14. 7.14 External Temp Sensor Control Electrical Characteristics
    15. 7.15 I2C Serial Bus Timing Parameters (SDA, SCLK)
    16. 7.16 SPI Timing Requirements
    17. 7.17 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
      1. 8.1.1 Boost Controller
      2. 8.1.2 LED Output Configurations
      3. 8.1.3 Display Mode
      4. 8.1.4 Cluster Mode
      5. 8.1.5 Hybrid Dimming
      6. 8.1.6 Charge Pump and Square Waveform (SQW) Output
      7. 8.1.7 Power-Line FET
      8. 8.1.8 Protection Features
      9. 8.1.9 Advanced Thermal Protection Features
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Clock Generation
        1. 8.3.1.1 LED PWM Clock Generation With VSYNC
        2. 8.3.1.2 LED PWM Frequency and Resolution
      2. 8.3.2 Brightness Control (Display Mode)
        1. 8.3.2.1 PWM Input Duty Cycle Based Control
        2. 8.3.2.2 Brightness Register Control
        3. 8.3.2.3 PWM Input Duty × Brightness Register
        4. 8.3.2.4 PWM-Input Direct Control
        5. 8.3.2.5 Brightness Slope
        6. 8.3.2.6 LED Dimming Methods
        7. 8.3.2.7 PWM Calculation Data Flow for Display Mode
      3. 8.3.3 LED Output Modes and Phase Shift PWM (PSPWM) Scheme
      4. 8.3.4 LED Current Setting
      5. 8.3.5 Cluster Mode
      6. 8.3.6 Boost Controller
      7. 8.3.7 Charge Pump
      8. 8.3.8 Powerline Control FET
      9. 8.3.9 Protection and Fault Detection Modes
        1. 8.3.9.1 LED Fault Comparators and Adaptive Boost Control
        2. 8.3.9.2 LED Current Dimming With Internal Temperature Sensor
        3. 8.3.9.3 LED Current Limitation With External NTC Sensor
        4. 8.3.9.4 LED Current Dimming With External NTC Sensor
        5. 8.3.9.5 Protection Feature and Fault Summary
    4. 8.4 Device Functional Modes
      1. 8.4.1 Standby Mode
      2. 8.4.2 Active Mode
      3. 8.4.3 Fault Recovery State
      4. 8.4.4 Start-Up and Shutdown Sequences
    5. 8.5 Programming
      1. 8.5.1 EEPROM
      2. 8.5.2 Serial Interface
        1. 8.5.2.1 SPI Interface
        2. 8.5.2.2 I2C Serial Bus Interface
          1. 8.5.2.2.1 Interface Bus Overview
          2. 8.5.2.2.2 Data Transactions
          3. 8.5.2.2.3 Acknowledge Cycle
          4. 8.5.2.2.4 Acknowledge After Every Byte Rule
          5. 8.5.2.2.5 Addressing Transfer Formats
          6. 8.5.2.2.6 Control Register Write Cycle
          7. 8.5.2.2.7 Control Register Read Cycle
    6. 8.6 Register Maps
      1. 8.6.1 Register Bit Explanations
        1. 8.6.1.1  Display/Cluster1 Brightness Control MSB
        2. 8.6.1.2  Display/Cluster1 Brightness Control LSB
        3. 8.6.1.3  Display/Cluster1 Output Current MSB
        4. 8.6.1.4  Display/Cluster1 Output Current LSB
        5. 8.6.1.5  Cluster2 Brightness Control MSB
        6. 8.6.1.6  Cluster2 Brightness Control LSB
        7. 8.6.1.7  Cluster2 Output Current
        8. 8.6.1.8  Cluster3 Brightness Control MSB
        9. 8.6.1.9  Cluster3 Brightness Control LSB
        10. 8.6.1.10 Cluster3 Output Current
        11. 8.6.1.11 Cluster4 Brightness Control MSB
        12. 8.6.1.12 Cluster4 Brightness Control LSB
        13. 8.6.1.13 Cluster4 Output Current
        14. 8.6.1.14 Configuration
        15. 8.6.1.15 Status
        16. 8.6.1.16 Fault
        17. 8.6.1.17 LED Fault
        18. 8.6.1.18 Fault Clear
        19. 8.6.1.19 Identification
        20. 8.6.1.20 Temp MSB
        21. 8.6.1.21 Temp LSB
        22. 8.6.1.22 Display LED Current MSB
        23. 8.6.1.23 Display LED Current LSB
        24. 8.6.1.24 Display LED PWM MSB
        25. 8.6.1.25 Display LED PWM LSB
        26. 8.6.1.26 EEPROM Control
        27. 8.6.1.27 EEPROM Unlock Code
      2. 8.6.2 EEPROM Bit Explanations
        1. 8.6.2.1  EEPROM Register 0
        2. 8.6.2.2  EEPROM Register 1
        3. 8.6.2.3  EEPROM Register 2
        4. 8.6.2.4  EEPROM Register 3
        5. 8.6.2.5  EEPROM Register 4
        6. 8.6.2.6  EEPROM Register 5
        7. 8.6.2.7  EEPROM Register 6
        8. 8.6.2.8  EEPROM Register 7
        9. 8.6.2.9  EEPROM Register 8
        10. 8.6.2.10 EEPROM Register 9
        11. 8.6.2.11 EEPROM Register 10
        12. 8.6.2.12 EEPROM Register 11
        13. 8.6.2.13 EEPROM Register 12
        14. 8.6.2.14 EEPROM Register 13
        15. 8.6.2.15 EEPROM Register 14
        16. 8.6.2.16 EEPROM Register 15
        17. 8.6.2.17 EEPROM Register 16
        18. 8.6.2.18 EEPROM Register 17
        19. 8.6.2.19 EEPROM Register 18
        20. 8.6.2.20 EEPROM Register 19
        21. 8.6.2.21 EEPROM Register 20
        22. 8.6.2.22 EEPROM Register 21
        23. 8.6.2.23 EEPROM Register 22
        24. 8.6.2.24 EEPROM Register 23
        25. 8.6.2.25 EEPROM Register 24
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Typical Application for Display Backlight
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1  Inductor Selection
          2. 9.2.1.2.2  Output Capacitor Selection
          3. 9.2.1.2.3  Input Capacitor Selection
          4. 9.2.1.2.4  Charge Pump Output Capacitor
          5. 9.2.1.2.5  Charge Pump Flying Capacitor
          6. 9.2.1.2.6  Diode
          7. 9.2.1.2.7  Boost Converter Transistor
          8. 9.2.1.2.8  Boost Sense Resistor
          9. 9.2.1.2.9  Power Line Transistor
          10. 9.2.1.2.10 Input Current Sense Resistor
          11. 9.2.1.2.11 Filter Component Values
            1. 9.2.1.2.11.1 Critical Components for Design
        3. 9.2.1.3 Application Performance Plots
      2. 9.2.2 Low VDD Voltage and Combined Output Mode Application
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Performance Plots
      3. 9.2.3 High Output Voltage Application
        1. 9.2.3.1 Design Requirements
        2. 9.2.3.2 Detailed Design Procedure
        3. 9.2.3.3 Application Performance Plots
      4. 9.2.4 High Output Current Application
        1. 9.2.4.1 Design Requirements
        2. 9.2.4.2 Detailed Design Procedure
        3. 9.2.4.3 Application Performance Plots
      5. 9.2.5 Three-Channel Configuration Without Serial Interface
        1. 9.2.5.1 Design Requirements
        2. 9.2.5.2 Detailed Design Procedure
        3. 9.2.5.3 Application Performance Plots
      6. 9.2.6 Solution With Minimum External Components
        1. 9.2.6.1 Design Requirements
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 器件支持
      1. 12.1.1 第三方产品免责声明
    2. 12.2 文档支持
      1. 12.2.1 相关文档
    3. 12.3 接收文档更新通知
    4. 12.4 社区资源
    5. 12.5 商标
    6. 12.6 静电放电警告
    7. 12.7 Glossary
  13. 13机械、封装和可订购信息

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • VFP|32
散热焊盘机械数据 (封装 | 引脚)
订购信息

8.6 Register Maps

Table 22. Register Map

ADDR REGISTER D7 D6 D5 D4 D3 D2 D1 D0
0x00 DISP_CL1_BRT DISP_CL1_BRT[15:8]
0x01 DISP_CL1_BRT[7:0]
0x02 DISP_CL1_CURRENT RESERVED DISP_CL1_CURRENT[11:8]
0x03 DISP_CL1_CURRENT[7:0]
0x04 CL2_BRT RESERVED CL2_BRT[12:8]
0x05 CL2_BRT[7:0]
0x06 CL2_CURRENT CL2_CURRENT[7:0]
0x07 CL3_BRT RESERVED CL3_BRT[12:8]
0x08 CL3_BRT[7:0]
0x09 CL3_CURRENT CL3_CURRENT[7:0]
0x0A CL4_BRT RESERVED CL4_BRT[12:8]
0x0B CL4_BRT[7:0]
0x0C CL4_CURRENT CL4_CURRENT[7:0]
0x0D CONFIGURATION RESERVED DRV_LED_CURENT_SCALE[2:0] EN_ADVANCED_
SLOPE		 PWM_SLOPE[2:0]
0x0E STATUS RESERVED BRT_SLOPE_
DONE		 TEMP_RES_
MISSING		 EXT_TEMP_
FLAG_L		 EXT_TEMP_
FLAG_H
0x0F FAULT RESERVED VIN_OVP VIN_UVLO TSD BOOST_OCP BOOST_OVP PL_FET_
FAULT		 CP_2X_
FAULT
0x10 LED FAULT RESERVED OPEN_LED SHORT_LED LED_FAULT[4:1]
0x11 FAULT CLEAR RESERVED CLEAR_FAULTS
0x12 ID FULL_LAYER_REVISION METAL_REVISION
0x13 TEMP MSB RESERVED TEMP[10:8]
0x14 TEMP LSB TEMP[7:0]
0x15 DISP LED CURRENT RESERVED LED_CURRENT[11:8]
0x16 LED_CURRENT[7:0]
0x17 DISP LED PWM PWM[15:8]
0x18 PWM[7:0]
0x19 EEPROM_CNTRL EE_READY RESERVED EE_PROG EE_READ
0x1A EEPROM_UNLOCK EEPROM_UNLOCK_CODE[7:0]

Table 23. EEPROM Register Map(1)

ADDR REGISTER D7 D6 D5 D4 D3 D2 D1 D0
0x60 EEPROM REG 0 EXT_TEMP_MINUS[1:0] DRV_LED_BIAS_CTRL[1:0] LED_CURRENT_CTRL[11:8]
0x61 EEPROM REG 1 LED_CURRENT_CTRL[7:0]
0x62 EEPROM REG 2 RESERVED EN_STEADY_
DITHER		 PWM_INPUT_HYSTERESIS[1:0] EN_ADVANCED_SLOPE PWM_SLOPE[2:0]
0x63 EEPROM REG 3 EN_DISPAY_LED_
FAULT		 DRV_LED_CURRENT_SCALE[2:0] LED_STRING_CONF[2:0] EN-PWM_I
0x64 EEPROM REG 4 EN_CL_LED_
FAULT		 DRV_LED_COMP_HYST[1:0] DRV_LED_FAULT_THR[1:0] DRV_HEADR[2:0]
0x65 EEPROM REG 5 I_SLOPE[2:0] PWM_RESOLUTION[1:0] DITHER[2:0]
0x66 EEPROM REG 6 RESERVED GAIN_CTRL[2:0] DRV_EN_EXT_
LED_CUR_CTR		 DRV_EN_SPLIT_FET BRT_MODE[1:0]
0x67 EEPROM REG 7 DRV_OUT2_CORR[3:0] DRV_OUT1_CORR[3:0]
0x68 EEPROM REG 8 DRV_OUT4_CORR[3:0] DRV_OUT3_CORR[3:0]
0x69 EEPROM REG 9 EXT_TEMP_GAIN[3:0] BL_COMP_FILTER_SEL[3:0]
0x6A EEPROM REG 10 EXT_TEMP_I_
DIMMING_EN		 NMOS_PLFET_
EN		 SOFT_START_SEL[1:0] PL_SD_LEVEL[1:0] PL_SD_SINK_LEVEL[1:0]
0x6B EEPROM REG 11 SLOW_PLL_DIV[12:5]
0x6C EEPROM REG 12 EN_SYNC PWM_SYNC PWM_
COUNTER_
RESET		 SLOW_PLL_DIV[4:0]
0x6D EEPROM REG 13 R_SELL[1:0] SEL_DIVIDER EN_PLL SYNC_PRE_DIVIDER[3:0]
0x6E EEPROM REG 14 RESERVED SYNC_TYPE PWM_FREQ[3:0]
0x6F EEPROM REG 15 MASK_BOOST_
OVP_FSM		 MASK_BOOST_
OCP_FSM		 MASK_OVP_
FSM		 MASK_VIN_
UVLO		 UVLO_LEVEL[1:0] OVP_LEVEL[1:0]
0x70 EEPROM REG 16 RESERVED BOOST_EN_
IRAMP _SU_
DELAY		 BOOST_EXT_
CLK_SEL		 BOOST_IMAX_SEL[2:0] BOOST_GD_
VOLT
0x71 EEPROM REG 17 BOOST_EN_
SPREAD_
SPECTRUM		 BOOST_SEL_IND[1:0] BOOST_SEL_IRAMP[1:0] BOOST_FREQ_SEL[2:0]
0x72 EEPROM REG 18 BOOST_DRIVER_SIZE[1:0] EN_ADAP EN_JUMP BRIGHTNESS_JUMP_THRES[1:0] JUMP_STEP_SIZE[1:0]
0x73 EEPROM REG 19 RESERVED BOOST_INITIAL_VOLTAGE[5:0]
0x74 EEPROM REG 20 BOOST_SEL_LLC[1:0] BOOST_SEL_JITTER_FILTER[1:0] BOOST_SEL_I[1:0] BOOST_SEL_P[1:0]
0x75 EEPROM REG 21 BOOST_OFFTIME_SEL[1:0] BOOST_BLANKTIME_SEL[1:0] RESERVED BOOST_VO_SLOPE_CTRL[2:0]
0x76 EEPROM REG 22 VDD_UVLO_LEVEL RESERVED CP_2X_CLK[1:0] CP_2X_EN SQW_PULSE_
GEN_EN
0x77 EEPROM REG 23 EXT_TEMP_LEVEL_HIGH[3:0] EXT_TEMP_LEVEL_LOW[3:0]
0x78 EEPROM REG 24 INT_TEMP_LIM[1:0] EXT_TEMP_PERIOD[4:0] EXT_TEMP_
COMP_EN
(1) Unused bits data must not be changed.